Providing other videos play ok in your winamp, you might just have downloaded a piece of junk Did you preview it? See here for info about virus problems on the network:
* WARNING: Viruses on network you should be aware of ! *

If your player's having problems with other videos, it might be a codec issue. But to me, sounds like a bogus file.

See here for how to use Bitzi to check whether a file's genuine:
How to use Bitzi Web Lookup .. & How to use Magnet Links & Direct Connect/Browse/Chat


*Please delete your email address Emails aren't allowed to be posted. You could end up with a ton of spam!